Sandy Hook Copycat is released after threats of shooting kindergardners il L.A

The 24-year-old man who threatened to commit Sandy Hook type crimes in L.A. claimed he was hell-bent on leaving "dead kindergartners" in his wake ... yet he will not be prosecuted.

Kyle Bangayan posted threats on Facebook the same day as the Newtown shooting ... and claimed he was targeting L.A. schools ... this according to a search warrant obtained by TMZ.

Kyle allegedly wrote, "No really America, if you post one more Facebook post about the shooting at that elementary school, I swear to whatever f**king god you believe in that I will do the same goddamn thing."

The rant continues, "I have the guns, I have the incentive, and I won't commit suicide at the end, I'll just go to the next f**king school and the next and the next ..."

And he goes on ... "So I woke up this morning and said to myself ... Dang you know [what] would be really awesome right now ... some dead kindergarteners ... and Christmas early."

Kyle was arrested in L.A. after a tipster told the LAPD about the online threats -- and when cops searched his bedroom (at his parents house) they found six semi-auto handguns, two rifles and one shotgun.

Now for the kicker. Kyle was released and the L.A. County D.A. said no charges would be filed, because the threats were not specific.